Mineralogy Database

Metarauchite Mineral Data

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General Metarauchite Information

Help on Chemical  Formula: Chemical Formula: Ni(UO2)2(AsO4)2•8H2O
Help on Composition: Composition: Molecular Weight = 1,020.71 gm
   Uranium   46.64 %  U    52.91 % UO2
   Nickel     5.75 %  Ni    7.32 % NiO
   Arsenic   14.68 %  As   22.52 % As2O5
   Hydrogen   1.58 %  H    14.12 % H2O
   Oxygen    31.35 %  O
            ______        ______ 
            100.00 %       96.87 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni(UO2)2(AsO4)2•8(H2O)
Help on Environment: Environment: Autunite group
Help on IMA Status: IMA Status: Proposed IMA 2008 (Dana # Added)
Help on Locality: Locality: Eduard mine, J�chymov district, Czech Republic Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Commission on New Minerals, Nomenclature and Classification (CNMNC)
Help on Synonym: Synonym: IMA2008-050
 

Metarauchite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7371:1:1.3557
Help on Cell Dimensions: Cell Dimensions: a = 7.194, b = 9.759, c = 13.231, Z = 2; alpha = 75.53°, beta = 84.01°, gamma = 81.59° V = 884.90 Den(Calc)= 3.83
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.625(1), 3.568(0.5), 5.044(0.29),3.492(0.28), 3.424(0.26), 4.277(0.26), 5.078(0.25), 2.99(0.21),
 

Optical Properties of Metarauchite

Help on Optical Data: Optical Data: NCalc= 1.57 - from Gladstone-Dale relationship (KC = 0.1503) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Metarauchite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.40 gm/cc
note: Specific Gravity of Metarauchite =3.82 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0041606753
Boson Index = 0.9958393247
Help on Photoelectric: Photoelectric: PEMetarauchite =1,202.73 barns/electron
U=PEMetarauchite x relectron=4,087.11 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,536,534.50 (Gamma Ray American Petroleum Institute Units)
Concentration of Metarauchite per GRapi unit = 282.76 (PPB)

Metarauchite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 8.60 ± 2.15 grams of pure Metarauchite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 860.07 ±215.02 grams of pure Metarauchite .

Estimated Radioactivity from Metarauchite - very strong
Specimen
Size
Weight/Volume
(Sphere)
*
Calculated
Activity
Bequerols
(Bq)
Calculated
Activity
Curies (Ci)
Estimated
Activity
GR(api)
Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 7.94 cm 83,485,688 2.26E-03 3,536,534.50 1,162.70
100 gm / 3.68 cm 8,348,569 2.26E-04 353,653.45 116.27
10 gm / 1.71 cm 834,857 2.26E-05 35,365.35 11.63
1 gm / 7.94 mm 83,486 2.26E-06 3,536.53 1.16
0.1 gm / 3.68 mm 8,349 2.26E-07 353.65 0.12
0.01 gm / 1.71 mm 835 2.26E-08 35.37 0.01
0.001 gm / 0.79 mm 83 2.26E-09 3.54 0.00

Weight of pure Metarauchite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.82 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
 

Metarauchite Classification

Help on  Dana Class: Dana Class: 40.02a.17.02 (40)Hydrated Phosphates, etc
  (40.02a)where A++ (B++)2 (XO4) � x(H2O), containing (UO2)++
  (40.02a.17)Dana Group
 
40.02a.17.01 Metakirchheimerite Co(UO2)2(AsO4)2•8(H2O) P 4/mmm 4/m 2/m 2/m
 
40.02a.17.02 Metarauchite! Ni(UO2)2(AsO4)2•8H2O P1 1
Help on  Strunz Class: Strunz Class: 08.EB.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.E - Uranyl Phosphates and Arsenates
  08.EB -UO2:RO4 = 1:1
 
08.EB.05 Autunite Ca(UO2)2(PO4)2•10-12(H2O) I 4/mmm 4/m 2/m 2/m
 
08.EB.05 Heinrichite Ba(UO2)2(AsO4)2•10-12(H2O) P 2/c 2/m
 
08.EB.05 Kahlerite Fe(UO2)2(AsO4)2•10-12(H2O) P 41/n 4/m
 
08.EB.05 Uranocircite Ba(UO2)2(PO4)2•12(H2O) P 4/nnc 4/m 2/m 2/m
 
08.EB.05 Novacekite Mg(UO2)2(AsO4)2•12(H2O) P 41/n 4/m
 
08.EB.05 Saleeite Mg(UO2)2(PO4)2•10(H2O) I 4/mmm 4/m 2/m 2/m
 
08.EB.05 Xiangjiangite (Fe,Al)(UO2)4(PO4)2(SO4)2(OH)•22(H2O) C 2/c or Cc Mono
 
08.EB.05 Torbernite Cu(UO2)2(PO4)2•8-12(H2O) I 4/mmm 4/m 2/m 2/m
 
08.EB.05 Uranospinite Ca(UO2)2(AsO4)2•10(H2O) P nma 2/m 2/m 2/m
 
08.EB.05 Zeunerite Cu(UO2)2(AsO4)2•10-16(H2O) P 4/nnc 4/m 2/m 2/m
 
08.EB.05 Metarauchite! Ni(UO2)2(AsO4)2•8H2O P1 1
 

Other Metarauchite Information

Help on See Also: See Also: Links to other databases for Metarauchite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Metarauchite Specimen Label here :

Metarauchite

Ni(UO2)2(AsO4)2•8H2O
Dana No: 40.02a.17.02 Strunz No: 08.EB.05
Locality:

 

Notes:

 

 
   
 


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